Incubator-alarm.



w, f @Hamy C. W. KELLEY.

INGUBATOR ALARM.

AYPLICATIOH FILED JUNE mz.

@Nanny UNITED STATES CIYDE WANDS KELLEY, OF WELLINQIN, TEXAS.

INCUBATOR-ALARM.

, dible signals, and n'ioreparticularly to 'the class of electric alarms for incubators.

The primary object of the invention is the provision of an alarm in which the temperature within an incubator when falling be low or 'rising above a predetermined degree will effect the closing of a circuit for the sounding of an alarm thereby signifying to a person that the incubator requires attention for regulatingl the temperature therein.

Another object of the invention is the pro-` vision of an alarm in which a thermostat will become disturbed for the closing of an electric circuit. when any variance inthe temperature occurs within the body of the.;

incubator whereby an alarm may be soundf ed, the alarm being disposed at any suitable point or locality and the mechanism for the closing of the circuit maybe readily and easily mounted upon an incubator either at the side or top thereof, of any ordinary wellknown construction.

A further object of the invention is the provision of an alarn'i of'this character in which a switch is arranged whereby the alarm may be sounded either upon the rising or lowering of the temperature above andbelow a predetermined point within an incubator. In other words, the alarm will be sounded only when the temperature rises or only when the temperature lowers therein as may be desired.

A still yfurther object of the invention is Athe provision of Yan electric alarm of this character which'is simple in construction, reliable and efficient in its purpose, and inexpensive in manufacture.

Wit-h theseand other objects in view the l invention consists in the iconstruction, combination andi arrangement of parts as will be hereinafter more. fully described, illus- Specication of Letters Patent.

Patented June 1o, L,1913.

1912. Serial No. 705,991.

trated in the accompanying drawings, and pointed out in the claims hereunto appended.

In the drawings: Figure 1 is a fragmentary vertical longitudinal sectional View through an incubator showing the alarm mechanism constructed in accordance with the invention appliedt-hereto. Fig. 2 is a side elevation of one form of the alarm .mechanism Fig. 3 isa sectionalf view on the line 3--3 of Fig. 1. Fig. 4 is a sectional view on the line 4--4 of Fig. 1. Fig. 5 is a View similar to Fig. 1 showing a modified form of alarm mechanism. Fig. 6 is a sectional view on the line 6*(3 of F ig. 5. Fig. 7 is a sectional view on the line 7-7 of Fig. 5.

Similar reference characters indicate cor-.-

responding parts throughout the several views in the drawings.

Referring to the drawings -by numerals 5 designates a portion of an incubator of any ordinary we`1l-known type, in which is arkranged a thermostat presently described.

Mounted on one of the end walls of the incubator 5 is a substantially rectangular shaped frame 6, in which is mounted the thermostat which comprises a pair of circular-shaped expansible bodies or shells 7, forming air chambers 8 therein, the same being in communication with eachother through a central passage 9, the bodies or shells 7 being preferably constructed from metal, which will expand' and contract` when subjected to varyingdegrees of temperature. Formed on and rising from the outer face of one of the bodies 7 centrally thereof is a boss or lug 10, the same being loosely engaged in a socket 11, formed in oneendA wall of the frame 6, so as to prevent the lateral displacement of the thermostatwhen mounted in the said frame. Formed .in the frame is a shelf or partiti0n..12, the same and the opposite end ofthe frame 6 being formed with alini-ng openings ;13,'.in which are slid ably fitted the follower rod 14, which is adapted to be acted upon by the thermostat for the shifting thereof and this rod is I arid project-ing inwardly thereof is a bracket Cil branch wires or 3i when the circuit closi ing element Q6 engages for tbe sounding of t-he bell 35 arranged Within sai-d circuit, thereby signaling an attendant of the temperature condition of the incubator.

In Figs. 56 and 7 inodication of the alarm mechanism wherein the circuit closing frame 41 is mounted upon the top of the incubator 5, while the frame 42 supporting the thermostat 43 is also mount-ed upon the top of the incubator and. depends therefrom in alinement with the Yframe 41, so that the guide rod 4 4 carrying the circuit closing element 45 will extendthrough the top of the incubatorv and the frame 42, so as to engage with the thermostat 43 whereby the latter will actuate the said rod 44 for operating the circuit closing element 45, the electric circuit being arranged identically with the electric circuit hereinbefore described, and the circuitclosing element will control the same for the sounding of an audible signal on the rising or falling of the temperature within the incubator above or below a predetermined degree of temperature. i

In both the preferred and modified forms of the invention there is shown spacer blocks 46 and 47, respectively, which are designed to limit the movement of the circuit closing elements Q6 and i5 in one direction, as will l be clearly apparent, so that it will be impossible for the said circuit closing elements t engage the contacts when the spacer blocks are positioned for engagement with the said elements.

From thefioi'egoing description, 4taken in connection with the accompanying drawings, it is thought that the construction and operation of the invention will be'clearly understood, and therefore, a more extended explanation has been omitted.

lVhat is claimed isz-- l, The combination with an incubator, of

ings 17 in said frame 6, the lever 15 bein* extended through an elongated slot 18 an Athe end walls of the incubator to the exterior for controlling and actuating an clef-:ric alarni mechanism presently dcl scribed. .v Mounted exteriorly upon the end of the incubator 5 is a frame 19 in which is ar- I ranged circuitI closing mechanism which comprises a vertically disposed slidable I guide rod 20, the same being loosely engaged l in guide openings 21 formed in opposite .eiids of the frame 19 and has its lower end pLvoted at 22 to the outer end of the rocking I lever 15. I lvlounted on one side wall of the frame 19 I 23, on which is carried an upper Contact 24, While mounted ,in the bottom end of the wall of the said frame .19 is a lowerl contact 25, the said upper and 'lower contacts being disposed in the path of movement of a circuitclosing element 26 in the form of an adjustable sleeve surrounding the guide rod 20, i and is a'djustably secured thereto by means l of a binding screw 27, which also forms a Contact for the connection of a branch curl rent wire 28, the saine being also connected With a switch contact- 29 mounted in the side l Wall of the said frame 19. Connected with l the upper and lower contacts 24.- and are Vbranch current wires 30 and 8l respectively, the saine being also connected to a contact I 32 common thereto and mounted in the side Wall of the frame 19. Arranged within an l electric circuit including conductor wires 33 and 34, is a bell and a source of electric energy, such as a battery 36, the conductor l wire 33 being connected with a switch contact plate 37 secured to the side Wall of the I frame 19 in the path of movement of a switch blade or linger 38, the saine being g pivoted at 39 to the said side wall of the frame 19, and. carries a contact 40 engagc ablewith the Contact 29, the cont-act wire di f being connected with the contact 32 so that l when the switch blade or linger 38 is engaged with the plate 37 and Contact 40, the l circuit will be closed through either of the niosiat supported interiorly of the incubator, an electric circuit having a bell therein, contacts arranged in spaced relation on the traine and connected witlisaid circuit, a

and engageablc with either of said contacts, an electric i ilrical body carried'l'iy said rod l Il connection between said body and said cirl the upper or lower contact Q4 and 25, thereby sounding the bell for signaling purposes, it being understood of course that the switch blade or finger 38 when disengaged from the contact 29 will sustain the electric circuit open and thei-ebyprevent the sounding of the Vbell 35 when the circuit closing element 2G vengages with either the upper or lower contacts 34 l and 35. in, contacts arranged in spaced relation on VJlicn` the tempera-ture within the incu- ,i the. frame and connected with said circuit, a bator 5 rises or lowers above or below ,q sliding rodinounted iii said frame, a cylin. predetermined degree the thermostat ari drical body carried by said rod and engageranged therein will actuate the circuit closer l able with cuit and having a cut-out, and a lever pivotally mounted on the incubator and having connect-ion with said rod and thermostat.

2. The combination with an incubator, of a frame mounted exteriorly thereof, a therniostat supported intei'iorly of the incubator, an electric circuit having ay bell theresliding rod mounted in said frame, a cylinf there is 'shown a slight a ira'me mounted eXteriorly' thereof, a thereither of said contacts, an electric In testimony whereof I ex my signature 1n presence of two witnesses.

connection between said body and said circuit and having a cut-out, a lever pivotally y mounted on the incubator and having coni nection with said rod and thermostat, and t ULYDE VANDS KELLEY.

. means mounted on the frame and movable into the path of the rsaid body to hold the same out /of engagement with one of the contacts.//

W i lnesses J. B. CASELEBERRY, J. T. MORGAN. 

